8556033080557 has 2 divisors, whose sum is σ = 8556033080558. Its totient is φ = 8556033080556.

The previous prime is 8556033080533. The next prime is 8556033080561. The reversal of 8556033080557 is 7550803306558.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7432717142601 + 1123315937956 = 2726301^2 + 1059866^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8556033080557 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8556033080498 and 8556033080507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8556033080527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4278016540278 + 4278016540279.

It is an arithmetic number, because the mean of its divisors is an integer number (4278016540279).

Almost surely, 2^{8556033080557} is an apocalyptic number.

It is an amenable number.

8556033080557 is a deficient number, since it is larger than the sum of its proper divisors (1).

8556033080557 is an equidigital number, since it uses as much as digits as its factorization.

8556033080557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120000, while the sum is 55.

The spelling of 8556033080557 in words is "eight trillion, five hundred fifty-six billion, thirty-three million, eighty thousand, five hundred fifty-seven".